Alert archive / Excessive Heat Warnings

Excessive Heat Warnings in the United States, 2011

158 excessive heat warnings in 2011. Each alert counts once, however many counties it covered. The archive of excessive heat warnings reaches back to 2005.

Excessive Heat Warnings by state

Each state shaded by its count. Tap a state for its own archive.

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Excessive Heat Warnings
158
Busiest month
July101 excessive heat warnings
Busiest day
July 20, 201115 excessive heat warnings

Over time

By month

By state

Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 20, 201115excessive heat warnings
  2. July 15, 201114excessive heat warnings
  3. July 22, 201110excessive heat warnings
  4. July 19, 20118excessive heat warnings
  5. August 2, 20118excessive heat warnings
  6. July 10, 20117excessive heat warnings
  7. July 11, 20117excessive heat warnings
  8. July 21, 20117excessive heat warnings
  9. August 4, 20116excessive heat warnings
  10. July 14, 20115excessive heat warnings
  11. July 12, 20114excessive heat warnings
  12. July 16, 20114excessive heat warnings
  13. July 31, 20114excessive heat warnings
  14. August 1, 20114excessive heat warnings
  15. August 3, 20114excessive heat warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive20102012

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.